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Finding the Fourth Proportional to 421,927.36, 582,115 and 240,508.44

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Solution

The fourth proportional to 421,927.36, 582,115 and 240,508.44 is: 331,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,927.36 : 582,115 = 240,508.44 : x
  2. Step 2: Convert to fraction form
    421,927.36/582,115 = 240,508.44/x
  3. Step 3: Cross multiply
    421,927.36x = 582,115 × 240,508.44
  4. Step 4: Simplify right side
    421,927.36x = 140,003,570,550.60
  5. Step 5: Solve for x
    x = 140,003,570,550.60/421,927.36
  6. Step 6: Final answer
    x = 331,819.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.